Apparatus for drawing off compressed gases from internal combustion engines



April 360; 1.3., A. ANDERBERG farm. a 1,999,269

APPARATUS FOR DRAWING COMPRESSED GASES FROM INTERNAL COMBUSTION ENGINESFiled June 16, 1955 ga -L Patented Apr. 30, 1935 smear OFFICE APPARATUSFOR DRAW ING OFF COM- PRESSED GASES FROM INTERNAL COM- BUSTION ENGINESAnders Anderberg and Lund,

Erik Anders Anderberg, Sweden Application June l6, 1933, Serial No.676,084 In Great Britain July 15, 1932 3 Claims.

The present invention refers to a valve device for taking off compressedgases from the cylinders of internal combustion engines. This relativelyhigh pressure fluid may be employed for any suitable purpose, such asfor instance applying brakes or operating doors. One of the objects ofmy invention is to provide a valve member proper, a seat, and a stop forlimiting the lift of the valve member which together form an aggregatewhich may be taken out for in spection and cleaning and replaced withoutdisturbing the lift, which is fixed during manufacture of the valve.Another object of my invention is the provision of a valve device inwhich both the aggregate asa whole and its different parts aresymmetrical-or identical in such a way that, in assembling the aggregateor placing the same in position in the valve-device, there is nopossibility of placing one of its parts or the whole valve-device,respectively, in a wrong position. These objects are of specialadvantage inasmuch as the valve device is commonly in the care ofunskilled persons.

The invention is more fully described in the following, referring to theattached drawing, in which:-

Figure 1 shows a valve device according to the present invention invertical section;

Figure 2 shows the same valve device in plan view;

Figure 3 shows a part of Figure l on a larger scale and in verticalsection; and

Figure 4 shows the same part in plan view.

In Figure 1, reference character denotes the means for connecting thevalve device to the cylinder of an internal combustion engine. Thechannel for drawing off combustion gases is denoted by 2 and a housingmember by 3. The housing is arranged for cooling by a fluid, the inletfor which is denoted by A and the outlet by 5. The channel 2 opensthrough a conical projection denoted by 211 into a recess formed inhousing 3. The valve member proper is indicated by ii and the seatmember by l. The stop member for limiting the lift of the valve memberis denoted by 8. The parts 6, 1 and 8 are held together by a ring 9,these parts 6, l, 8 and 9 together forming an aggregate. The pipe forleading oil the combustion gases is marked by H and the end E2 of thispipe extends into the recess and is formed with a conical surface.

The gases drawn off from the cylinder of the internal combustion enginewill, during certain parts of the cycle, flow through the channel 2,lift the valve member 6 and pass through the channel ID in the ring 9and through the channel 53 into the outlet pipe II.

The contact surface of the valve member 5 cooperating with part 8 actingas a stop is formed conically and with the same conicity as the valvesealing surface cooperating with part 1 acting as a seat. In the sameway the cone denoted 2a and the conical end of the pipe H are formedwith the same conicity as said sealing and contact surfaces of the valvemember. In this way the seat member '5 and the stop member 8 can be madeidentical and it does not matter how they are screwed into the ring 9,which keeps them together, as, being made of the same material, the part8 without any difficulty may serve as a seat and part l asa stop. As,according to what has been stated, the conical surfaces of the valvemember are identical, it is immaterial how the valve member is insertedwhen the aggregate is put together. For screwing the parts I and 8 20into the part 9 slots l5 are provided. When putting the parts together,the parts i and 8 have first to be screwed into ring 9 in such a waythat they both contact the valve member. If the screw thread marked Iiihas for instance 24 turns per inch and the desired lift of the valvemember 6 is for instance 0.35 mm. this lift will be exactly obtained byloosening one of the parts I or 8 onethird of a turn. After theaggregate, comprising the parts 6, l, 8 and 9 has been put into thehous- 3O ing member 3 and the outlet pipe I i has been screwed fast bymeans of member I 4, the aggregate is kept in its right position, and atthe same time the fixed lifting height is exactly maintained. When theaggregate is taken out for inspection or cleaning, these operations willnot have any influence upon the fixed lift of the valve member. Theaggregate may, on the contrary, be put back into the valve device afterinspection or rinsing, and in doing so it will be of no importance whichof the parts 1 or 8 is placed upwards or downwards.

While I have shown and described one more or less specific embodiment ofmy invention, this is for the purpose of illustration only, and is notintended as a limitation of the scope of the invention, which is to bedetermined by the appended claims viewed in the light of the prior art.

We claim:

1. Apparatus of the class described including a check valve including avalve member having opposite "conical surfaces, a stop member havingopposite conical surfaces and a seat member having opposite conicalsurfaces, one of the surfaces of said valve member cooperating with onesurface of said stop member and the other surface of said valve membercooperating with one surface of said seat member, a housing memberhaving a recess formed therein and provided with a projection having aconical surface extending into said recess, said housing member beingformed with a channel passing therethrough and through said projectionto communicate with said recess, a conduit having a conical surfaceextending into said recess, all of said surfaces being of substantiallythe same conicity, and means for clamping said check valve in saidrecess between said projection and said conduit with the other conicalsurfaces of said seat member and said stop member cooperating with theconical surfaces of said projection and said conduit, respectively.

2. Apparatus of the class described including a check valve including avalve member having opposite conical surfaces, a stop member havingopposite conical surfaces, a seat member having opposite conicalsurfaces and means for holding said stop member and said seat member infixed relationship with said valve member between them, one of thesurfaces of said valve member cooperating with one surface of said stopmember and the other surface of said valve member cooperating with onesurface of said seat member, a housing member having a recess formedtherein and provided with a projection having a conical surfaceextending into such recess, said housing member being formed with achannel passing therethrough and through said projection to communicatewith said recess, a conduit having a conical surface extending into saidrecess, all of said surfaces being of substantially the same conicity,and means for clamping said check valve between said projection and saidconduit with the other conical surfaces of said seat member and saidstop member cooperating with the conical surfaces of said projection andsaid conduit, 7

respectively. 7

3. Apparatus of the class described including a check valve including avalve member having opposite conical surfaces, an externally threadedstop member having opposite conical surfaces, an externally threadedseat member having opposite conical surfaces and an internally threadedring member, said stop member and said seat member being adapted to bescrewed into said ring member with said valve member between them, oneof the surfaces of said valve member cooperating with one surface ofsaid stop member and the other surface of said valve member cooperatingwith one surface of said seat member, a housing member having a recessformed therein and provided with a projection having a conical surfaceextending into said recess, said housing member being formed with achannel passing therethrough and through said projection to communicatewith said recess, a conduit having a conical surface extending into saidrecess, all of said surfaces being of substantially the same conicity,and means for clamping said check valve between said projection and saidconduit with the other conical surfaces of said seat member and saidstop member cooperating with the conical surfaces of said projection andsaid conduit, respectively.

ANDERS ANDERBERG. ERIK AN ANDERBERG.

